Cork for stoppering bottles or the like.



No. 868,914. PATENTED 001222. 1907. H. W. DAWSON.

CORK FOR STOPPERING BOTTLES. OR THE LIKE.

APPLICATION FILED MAY 25. 1907.

Mnlessas WW I N N R Mam MW Q To all whom it may concern:

subject of the King of Great Britain, residing at Portalegre, in theKingdom of Portugal, have invented new and useful Improvements in Corksfor Stopperin g Bottles or the Like, of which the following is aspecification.

ing bottles, such as are manufactured exclusively of eork wood.

screw thread upon the body of the cork stopper, said thread to connnencegradually a suitable distance from the head of the cork, and graduallyterminate so as to leave a straight portion at each end of the body ofthe cork. and terminate with the bottom of the cork. corks are speciallysuitable for the fermented liquor trade, and are intend d to supplantthe hard-wood or composition stoppers now employed. result in the mannerillustrated by the accompanying drawings, in which manufacturedaccording to my invention. elevation of the reverse side of Fig. 1,showing the coinmencenient and termination of the screw thread. F 3 is amodification of l ig. 1. Vation of a portion of a screw-necked bottle,showing my improved stopper applied. vention applied to a cork withconcave recesses in its top or head. 7

several views.

I manufacture the same of cork-wood only, and with a square or flatsided head. which may be cylindrical or slightly taper, 1 cut or form ascrew thread A commencing gradually a suitable distance below the headl3, and gradually termihitting a suitable distance from the bottom ofthe cork. The straight portion C at the bottom of the cork is compressedand l OI'CGd lJlKVOHd the screwed portion of UNITED STATES PATENT()FFIOE. HERBERT WILLIAM DAWSON, OF PORTALEGRE, PORTUGAL.

CORK FOR STOPPERING BOTTLES OR THE LIKE.

Specification of Letters Patent. A plication filed May 25,1907. SerialNo. 375,641.

NO. 868,914. Patented Oct. 22, 1907.

the bottle neck D by the threaded portion A of the cork, where it againexpands and gripping the sides of the bottle neck forms an effectualseal.

The straight portion E above the screw and adjoining the head of thecork, is more or less compressed and forced into the top of the bottleneck in like manner, and serves as an additional seal; Or the screwthread upon the cork may continue to the bottom, see Fig. 3, but in thiscase I prefer to increase the length of the straight portion adjoiningthe head of the cork.

It is the straight portions which provide the most effectual seal, butthe screwed portion which is itself slightly compressed during theinsertion of the cork within the bottle also assists towards this end,and in addition serves as a lock against any expansive pressure fromwithin the bottle forcing out the stopper.

The corks are also treated with sterax in the usual way.

Corks constructed according to my invention are specially suitable forstoppering beer bottles, or other bottles containing fermented liquids,they are more sanitary than stoppers made of any other material, aremore effectual seals than hard-wood or composition stoppers, arecheaper, and being easily and quickly removed or replaced by hand, maybe used as frequentlyand are quite as durable as the latter.

What 1 claim as my invention, and desire to secure by Letters Patent,is-

1. A bottle stopper formed of elastic material and pro vided with apermanently screwthroaded portion, and having also a part normallywithout any screwthread which has a screwthread pressed into it bycontact with Be it known that l. HERBERT WILLIAM DAWSON, a

This invention relates to stoppers or corks for stopper- According to myinvention I cut or otherwise form a Or if desired the thread maycontinue These I attain this Figure 1 shows an elevation ofcork-wood-stopper Fig. 2 is an ig. Fig. 4 is a sectional ele- Fig. 5shows my in- Similar letters refer to similar parts throughout the Inconstructing stoppers according to my invention 11 A bottle Stopperfolllwd fllflstiv material 11nd D vided with a permanently screwthreadedportion, and having also two parts arranged one at each end of the saidserewllireaded portion which are normally without any screwthreads andwhich have screwthreads pressed into them by contact with thescrewthreaded neck of the bottle when inserted therein.

HERBERT WILLIAM DAWSON.

Upon the body of the cork Witnesses I Annnn'r II. MAseoNAnos, R. H.KrNcHAN'r.

